Serotonin is involved in regulating the digestive system so if you take drugs that act on serotonin like LSD or MDMA symptoms like nausea are quite common.
I would say you shouldn't have your first trip unless your mental health is stable, or it is in a therapeutic context.
Once you have some sense of what to expect you can more readily use your judgment as to whether you're in the right headspace. I find it can be quite helpful to mitigate mild/moderate anxiety or depression.
The OP was in part discussing education in the US and claiming that the education is inferior to the education in several other countries. Some of the evidence is some test scores on some tests given internationally.
Okay: We're considering education quality and using test scores as evidence.
Well, it is Social Science 101 (my wife's Ph.D. was in mathematical sociology, and my brother's Ph.D. was in political science) to control on other likely explanatory variables.
So, an obvious candidate alternate explanatory variable is culture of the country of the recent ancestors of the students.
So, to compare education in the US with that in, e.g., Japan, we should see how (A) US students of recent Japanese descent compare with (B) Japanese students in Japan. So, now are holding culture reasonably constant and, thus, doing better comparing the schools and whatever else we have not controlled on.
Not to control on culture would be grade F in Social Science 101 and give total garbage results.
I.e., no fair blaming the education in the US when the real cause of the differences is culture and not the education.
I worked at an HR tech startup that did recruiting services for a lot of seed/series A companies. Maximum ages for roles were discussed openly and nobody even considered the possibility doing so might be illegal.
Yeah a coworker of mine looking for a tech job in a different industry had someone straight up tell them they were worried he was too old.... dude wasn't that old. When he mentioned it to the recruiter she didn't even seem to think it was an odd thing to say... so she repeated it.
